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EP2977112A1 - Crayon d'application - Google Patents

Crayon d'application Download PDF

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Publication number
EP2977112A1
EP2977112A1 EP14178613.7A EP14178613A EP2977112A1 EP 2977112 A1 EP2977112 A1 EP 2977112A1 EP 14178613 A EP14178613 A EP 14178613A EP 2977112 A1 EP2977112 A1 EP 2977112A1
Authority
EP
European Patent Office
Prior art keywords
liquid
application
ampoule
cap
closure cap
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP14178613.7A
Other languages
German (de)
English (en)
Inventor
Daniel Fehlmann
Dana Maiwald
Dominique Burkard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sika Technology AG
Original Assignee
Sika Technology AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sika Technology AG filed Critical Sika Technology AG
Priority to EP14178613.7A priority Critical patent/EP2977112A1/fr
Priority to EP15738653.3A priority patent/EP3171986A1/fr
Priority to US15/321,658 priority patent/US10350937B2/en
Priority to PCT/EP2015/066355 priority patent/WO2016012353A1/fr
Priority to US14/803,395 priority patent/US10239342B2/en
Publication of EP2977112A1 publication Critical patent/EP2977112A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
    • B43K—IMPLEMENTS FOR WRITING OR DRAWING
    • B43K8/00—Pens with writing-points other than nibs or balls
    • B43K8/02—Pens with writing-points other than nibs or balls with writing-points comprising fibres, felt, or similar porous or capillary material
    • B43K8/024—Pens with writing-points other than nibs or balls with writing-points comprising fibres, felt, or similar porous or capillary material with writing-points comprising felt
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
    • A46B11/0003—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water containing only one dose of substance, e.g. single-use toothbrushes
    • A—HUMAN NECESSITIES
    • A46—BRUSHWARE
    • A46B—BRUSHES
    • A46B11/00—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water
    • A46B11/001—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs
    • A46B11/0013—Brushes with reservoir or other means for applying substances, e.g. paints, pastes, water with integral reservoirs dispensing by gravity or by shaking
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/002—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces with feed system for supplying material from an external source; Supply controls therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/10—Hand tools for removing partially or for spreading or redistributing applied liquids or other fluent materials, e.g. colour touchers

Definitions

  • the invention relates to an application pen for dispensing a liquid onto a surface, preferably for applying a protective layer on adhesive surfaces of a vehicle, in particular for adhesion improvement in adhesive applications, comprising a hollow body in which the liquid preferably within an ampoule accommodated in the hollow body, the exit of the Liquid can be broken, is added.
  • Pre-treatment agents for the production of adhesive bonds are usually offered in packages consisting of an aluminum bottle, polyethylene cup and a screw cap of the polypropylene bottle. In the field of disposable applications also aluminum tubes or primer pens and activator pads are offered with low content.
  • the WO 2014/004521 A1 describes an applicator pen comprising a cylindrical body in which a glass ampoule is held, an applicator over which liquid can be applied to a surface and a cap. The ampoule is destroyed by a pressure applied radially to the peripheral surface of the application member so that the liquid exits the ampoule.
  • the application part comprises a porous body. A seal between the individual parts (cylindrical body, application part and cap) via a press fit ("press fit"). Overall, the application pin gem.
  • WO 2014/004521 A1 the risk of drying the liquid, making this application pen difficult can be used multiple times (over a longer period of time). In addition, the way the ampoule is broken is perceived as being relatively complicated and not very “intuitive”.
  • the invention is therefore based on the object to provide an improved application pen of the generic type, which in particular can be used repeatedly over a longer period of time or to operate in a simple manner.
  • an application pen for dispensing a liquid onto a surface, preferably for applying a protective layer to adhesive surfaces of a vehicle, in particular for adhesion improvement in adhesive applications, comprising a hollow body for receiving the liquid in particular within an ampoule accommodated in the hollow body (comprising a Peripheral surface), whereby the ampoule can be broken to the outlet of the liquid.
  • a breaker having an axially movable portion is provided and formed such that movement of the movable portion in the axial direction results in breakage of the vial.
  • breakers are proposed which require a radial application of force (for example, by bending at a table edge or impressions of a peripheral surface), which is perceived as relatively complicated and complicated.
  • According to the invention can be an axial force (for example, by a blow to one end of the application pen or a rotary drive via a thread, as explained in detail below) comparatively easy breakage of the ampoule can be achieved.
  • An "axial" movement or force is to be understood as meaning a movement or force action in the direction of the longitudinal axis of the application pen.
  • the hollow body has at least two parts, preferably at least three parts, wherein on at least one surface, in particular peripheral surface, of one of the parts of a surface, in particular Peripheral surface, facing another part, a sealing ring, in particular a sealing lip is provided.
  • the sealing ring, in particular the sealing lip is preferably integrally formed on one of the facing surfaces.
  • a “sealing ring” is intended to represent a structure that is self-contained.
  • a “sealing lip” is preferably a “sealing ring", which is designed as a ring lamella.
  • a key idea of the second aspect is to provide at least one sealing ring which simplifies a sealing of the individual components of the application pen.
  • the items are movable (such as a cap relative to a head part or a head part relative to a base part, for example, for breaking the ampoule)
  • a high density at the same time allows comparatively simple relative movement.
  • sealing ring for example at least two, preferably at least three or four sealing rings (sealing lips) may be provided on one of the facing surfaces.
  • a plurality of sealing rings may be provided on an outer circumferential surface of a head part, wherein a first group of sealing rings faces an inner surface of a closure cap and a second group of sealing rings an inner peripheral surface of a base part.
  • the hollow body comprises at least one closure cap and a base body which preferably, an end of the application pen facing away from the cap, wherein the closure cap comprises a liquid application part (in particular liquid application felt), wherein the closure cap can be removed together with the liquid application part of the base body, wherein the liquid application part in the removed state of the closure cap to the surface to be applied to the liquid can be applied to apply the liquid.
  • a liquid application part is arranged inside the closure cap and thus the closure cap simultaneously serves as a means for applying the liquid.
  • the liquid application part remains in the main body of the pen.
  • the liquid application part dries, either the entire application pen has to be disposed of or (if this is even possible), the liquid application part has to be removed from the application pen as such, which is associated with a corresponding risk of contamination of the user.
  • the invention allows gem. the third aspect, that the cap including the liquid application part is exchanged in its entirety. Since the cap is only a relatively small or easily manufacturable component, this is connected with only a small cost and a low impact on the environment. This generally results in that the application pen can be used several times over a longer period of time.
  • the hollow body has at least one base body and a head part, wherein the head part comprises a (flexible) end face with a slot ,
  • the slot may have a width of at most 1 mm, preferably 0.5 mm, more preferably at most 0.2 mm.
  • the slot may have a length of at least 1.5 mm, preferably at least 2 mm or at most 10 mm, preferably at most 5 mm.
  • a key idea of the fourth aspect is to have a job opportunity according to the "baby bottle principle" show.
  • an optionally transparent cap can be provided.
  • the head part can be made of a (soft) plastic, for example polyolefin (for example polyethylene and / or polypropylene) or of silicone.
  • the head part is preferably designed so that it can be pressed in its front region, so that thereby dosing and application of the liquid can take place.
  • the head part has no felt, is designed as "feltless".
  • the movable portion is arranged and formed such that it can be moved in the axial direction by a blow carried out in the axial direction on one end of the application pin, so that the ampoule breaks.
  • the "impact” may, for example, be directed to one end of the application pen, which is opposite to the exit region. However, the “impact” is preferably carried out on an end, on which the outlet region is arranged, for example on a closure cap or a head part.
  • impact is meant in particular a preferably short-term, e.g. Less than 0.1 s long, pressurization be understood.
  • the movable section can be driven by rotation of a rotatable section, in particular a closure cap, so that rotation of the rotatable section drives the movable section in the axial direction, so that the ampule breaks.
  • the rotatable portion may be formed by the movable portion itself (at least partially).
  • a corresponding rotary drive can be realized for example by a thread (screw thread).
  • a closure cap can also be removed from the remaining components of the application pen via the same thread, for example the movable section (eg a head part) can be removed with the Closing cap to be connected (in operative connection).
  • the movable section eg a head part
  • the Closing cap to be connected (in operative connection).
  • the movable portion can then be moved in the axial direction of the ampoule so that it breaks.
  • the closure cap can then be rotated in opposite directions, so that the closure cap can be removed from the remaining components of the application pen.
  • the breaking device comprises a deflecting device such that a force which acts axially on account of the movement of the movable section is deflected in the direction of the peripheral surface of the ampoule (for breaking the ampoule).
  • a breakage of the ampoule is made possible by an axial movement (for example, an impact from the front or rear) and this is synergistically combined with the fact that by means of the deflection device, a force acting on the peripheral surface of the ampoule is deflected due to the axial movement is, so that the ampoule can be destroyed with relatively little effort.
  • the breaking device has at least one (preferably flexible) claw, preferably in such a way that at least one claw is driven against the contact surface of the ampoule by the axial movement of the movable section.
  • the hollow body comprises a head part and a base body, which comprises an end facing away from the outlet region.
  • the head part is preferably movable relative to the base body in the axial direction.
  • the head part may in this embodiment define the movable portion or at least form part of the movable portion.
  • the head part can form at least one component of the breaker.
  • the head part is at least partially guided within the base body.
  • the head part may have the claws described above.
  • the head part (as well as the base body) may be at least partially cylindrical. In particular, when a relative movement between the head part and the base body is used to break the vial (for example, in the presence of an axial impact), the operability of the application pen is improved.
  • a head part in particular the head part described above
  • a closure cap is removed from the base body and head assembly so that a liquid application felt (especially the liquid application felt) is exposed to the exterior for application of the liquid.
  • the absorption sponge can ensure that vibrations are trapped during transport and thus the ampoule is protected. Furthermore, he can ensure that when breaking the ampoule no glass splinters emerge in the front area. Overall, this makes operability easier and prevents injuries.
  • the hollow body in particular a base body of the hollow body
  • at least one run-on slope on an inner peripheral surface in such a way that an axially acting force, at least partially, in a radially inwardly directed (directed to the outer peripheral surface of the ampoule) force is converted.
  • the run-on slope preferably cooperates with the claws described above. These claws can in turn have a corresponding run-on slope.
  • a preferred embodiment is configured that a run-up slope of a claw cooperates with a run-up slope of the base body such that an axial displacement of the claw in the direction of a rear end of the application pin forces the claw radially inwards so that it presses against the ampule and breaks it.
  • a structurally simple solution is shown in order to break the ampoule in a safe manner.
  • a (removable) film element in particular label, can be arranged around the application pen.
  • the film element may preferably be arranged around a head part and / or between a closure cap and a base body.
  • the film element may be formed so as to block axial movement between the head part and the base body, so that - as long as the film element is attached - the ampoule can not be broken.
  • the film element is then removed, whereby the blockage is lifted by the film element and the ampoule can be broken. If, for example, the film element (label) is labeled accordingly, an intuitive and simple operation of the application pen can be achieved.
  • the hollow body may have different parts, in particular a base body, preferably comprising an end of the application pin facing away from the outlet area and / or a head part (for example adjacent to the base body) and / or a closure cap.
  • a liquid application part in particular liquid application felt
  • a sponge absorption sponge
  • the liquid application part, in particular the liquid application felt may project at least partially from the closure cap, in particular to at least 2 mm or at least 4 mm.
  • the liquid application part, in particular the liquid application felt is easily accessible from outside, so that liquid can be applied to a surface.
  • the liquid application part may be (optionally fixed and / or integral) connected to the cap, in particular inserted and / or pressed and / or glued and / or welded.
  • An end of the closure cap facing away from the liquid application part may have a recess.
  • This recess has, for example, a diameter of at least 0.5 cm and / or at most 1 cm and may, for example, have a round cross-section.
  • the closure cap may have axially extending ribs on its outer peripheral surface. Also, the operability of the cap, especially when it acts as a liquid applicator (with integrated liquid application part), will be improved.
  • a closure cap for an application pen in particular of the type described above, is proposed, wherein the closure cap has a, in particular porous, liquid application part, preferably a liquid-applied felt.
  • Fig. 1 shows a schematic section of a first embodiment of an application pen.
  • the application pen comprises a base body 10, an (axially movable) head part 11 (which forms a movable section) and a closure cap 12.
  • the base body 10, head part 11 and closure cap 12 define a hollow body 3.
  • the base body 10 has an end 14 facing away from an exit region 13 (rear end) of the application pin.
  • an ampoule shown in dashed lines
  • a sponge 16 is provided, which prevents the ampoule (or fragments thereof) from falling out of the application pen.
  • the sponge 16 is provided inside the head part 11.
  • a liquid application felt 17 is gem.
  • Fig. 1 partially disposed within the head portion 11 and the cap 12. Claws 18 (in the present example, four claws are provided, but this number is not mandatory), the ampoule 15 can be broken so that liquid emerges from the ampoule.
  • FIGS. 2 and 3 show an enlarged section of the embodiment acc. Fig. 1 in a first position ( Fig. 2 ) and a second position ( Fig. 3 ).
  • Fig. 2 It can be seen that a stop 19 of the head part 11 is removed from a stop 20 of the base body 10, so that the head part 11 and base body 10 can be moved towards each other, which is symbolized by the arrows 21. If, in the direction of the arrows 21, a blow is then exerted on an end 22 of the application body, which is assigned to the outlet region 13 and is formed by the closure cap 12 in the present case, the head part 11 shifts incl. Cap 12 in the direction of the base body 10.
  • the final state is in Fig. 3 shown.
  • run-up bevels 23 of the claws 18 come into contact with an annular circumferential run-on slope 24 of an inner circumferential surface of the base body, so that the (flexible) claws are bent inward (in the radial direction), so that a pressure is exerted on the ampule and this breaks (s. Fig. 3 ).
  • the impact necessary for breaking the ampoule can be effected, for example, by gripping the base body 10 and pushing the cap 12 face-on against a wall (beaten).
  • the claws 18 can bend radially inwardly, they are spaced apart by slots 25.
  • a seal between base body 10 and head part 11 is provided via seal rings 26 provided on an outer peripheral surface of the head portion 11 facing an inner peripheral surface of the base body 10.
  • seal rings 26 provided on an outer peripheral surface of the head portion 11 facing an inner peripheral surface of the base body 10.
  • the cap 12 can be screwed onto the head part 11 via a screw thread 27 (the associated thread of the head part can not be seen in the figure since it is interrupted and the interruptions lie in the cutting plane).
  • a sealing of the closure cap 12 relative to the head part 10 is effected by a cone section 28 on the closure cap 12 and a cone section 29 on the head part 11.
  • the head part 11 has a ring inclined surface 30 which corresponds to the cone section 28 of the closure cap 12.
  • the cap 12 includes an annular ramp surface 31 corresponding to the cone portion 29 of the head part 11. Overall, a reliable sealing of the head part 11 relative to the cap 12 is thereby realized.
  • Fig. 4 the cap 12 without head part 11 and base body 10 is shown.
  • the posstechniks Kirefilz 17 is disposed in a recess 32 of the cap (for example, glued or welded or integrally formed in other ways; if necessary, the liquid application felt 17 can also be detachable from the cap).
  • the cap 12 still has its associated liquid application felt 17, which is soaked due to its previous contact with the sponge 16 with liquid. This liquid in the liquid application felt 17 can then be applied to a surface. If the liquid application felt 17 dried out or for some other reason no longer usable, the cap 12 can be thrown away and replaced by a new cap 12. In this case, the remaining components of the application pen can continue to be used. This considerably increases the service life of the application pen.
  • Fig. 5 shows a schematic sectional view of a second embodiment of the invention (in a first position).
  • Fig. 6 shows the embodiment according to Fig. 5 without the cap.
  • the ampoule is in FIGS. 5 and 6 for the sake of simplicity not shown, but analog Fig. 1 arranged.
  • the mechanism for breaking the ampoule corresponds to the mechanism according to FIG Fig. 1 to 4 and will not be explained again at this point.
  • no sponge 16 is provided in the embodiment according to the Fig. 5 to 7 no sponge 16 is provided.
  • the embodiment according to the Fig. 5 to 7 prevents the liquid application felt 17, the glass fragments of the ampoule can escape.
  • the liquid application felt 17 see.
  • the head part 11 is sealed off from the base body 10 by sealing rings 26.
  • These sealing rings 26 may be formed as sealing lips or sealing lamellae.
  • the sealing ring 33a (see Fig. 7 ) engages in a corresponding annular recess (groove) 34 on an inner peripheral surface of the cap 12 to form a latching connection.
  • the sealing rings 33b, 33c are as Sealing lips (sealing blades) formed, which further improve the seal.
  • the cap 12 according to the embodiment of the Fig. 5 to 7 is plugged onto the head part 11, wherein a connection is realized by latching.
  • Fig. 8 shows a schematic sectional view of a third embodiment of the application pen.
  • the third embodiment according to 8 and 9 corresponds to the first embodiment according to the Fig. 1 to 4 (in particular with regard to the sealing between the head part 11 and base body 10 or head part 11 and closure cap 12 and with regard to the liquid application felt 17 and the sponge 16) with the following differences.
  • the ampoule 15 is broken by an annular constriction, which is a predetermined kink. Due to the annular constriction 35 of the base body 10 may be kinked, so that the ampoule 15 breaks.
  • Fig. 9 can be seen in the third embodiment is analogous to Fig. 4 the liquid application felt 17 is disposed inside the closure cap 12.
  • the 10 and 11 show in a schematic sectional view a detail of a fourth embodiment of the invention.
  • the non-illustrated parts of the fourth embodiment particularly as far as the base body 10 and the mechanism of breakage of the ampoule, may be formed as in the first, second or third embodiment (or a combination of these embodiments).
  • no liquid application felt provided in the embodiment according to the 10 and 11 no liquid application felt provided in the embodiment according to the 10 and 11.
  • the falling out of splinters of the ampoule is prevented by the sponge 16, which also absorbs and absorbs liquid.
  • the (preferably transparent) cap 12 To the application pen according to 10 and 11 To be able to use, first the (preferably transparent) cap 12 must be removed (see Fig. 11 ).
  • FIGS. 12 and 13 show sectional views of a fifth embodiment of the invention ( Fig. 12 with cap; Fig. 13 without cap).
  • the mechanism of breakage of the ampoule corresponds to the mechanism as in the embodiment according to FIG 8 and 9 is described.
  • a sponge is not provided, but a liquid application felt 17.
  • This remains analogous to the embodiment of the FIGS. 5 and 6 in the head part 11, the sealing lips 26 analogous to the previous embodiments, in order to realize a seal between the base body 10 and the head part 11.
  • Sealing rings 33 a to 33 c provided to allow a latching of the closure cap 12 and a seal between the closure cap 12 and the head part 11.
  • a circumferential film element (not shown) preferably be arranged as a label. If this label is removed, the stops 19 and 20 can be moved towards each other.
  • the respective cap 12 can be screwed onto the head part 11 or plugged on (bounced).
  • the sponge 16 may for example be a melamine sponge or be made of a different plastic. In general, the sponge 16 may be formed from a foam.
  • the ampoule 15 may for example consist of glass.
  • the base body and / or the head part and / or the closure cap 12 may be made of a plastic, for example Polyamide, polyethylene or polypropylene (generally polyolefin) are formed.
  • the application pen is suitable for the application of liquids to surfaces of all kinds.
  • a preferred application is the application of a liquid as an adhesion-promoting substrate or as a protective layer in the region of bonding surfaces (for example in the automotive sector when inserting disks).
  • the liquid application felt 17 may generally be any liquid application member.
  • the liquid application felt may consist of fibers in random or fluid-oriented fibers.
  • FIGS. 14 and 15 each show a section of a sixth embodiment of the application pen.
  • Fig. 14 shows a section analog Fig. 2
  • Fig. 15 shows a section analog Fig. 3
  • the head portion (movable portion) 11 is not moved by an axially acting impact, but by rotation of the cap 12.
  • the cap 12 has a thread 40 (which is preferably formed as an internal thread).
  • the base body 10 has a corresponding thread 41 (which is preferably designed as an external thread), so that the closure cap 12 can be moved by rotation in the direction of the base body 10.
  • the head part 11 is urged in the direction of the base body 10, so that the run-on slope 23 of the head part 11 analogous to the embodiment of FIGS. 2 and 3 against the run-on slope 24 of the base body 10 starts, so that the claws 18 are pressed inwards and located between the claws 18 ampoule (not in the FIGS. 14 and 15 shown; see. for example Fig. 1 ) breaks. Furthermore, in the embodiment according to FIGS. 14 and 15 Still positioning pin 42 between the liquid application felt 17 and the (in FIGS. 14 and 15 not shown) so that the ampoule can be positioned and supported before it is broken.
  • 10 sealing rings (or - lips) 43 are provided between the head part 11 and base body.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Closures For Containers (AREA)
  • Medical Preparation Storing Or Oral Administration Devices (AREA)
EP14178613.7A 2014-07-25 2014-07-25 Crayon d'application Withdrawn EP2977112A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP14178613.7A EP2977112A1 (fr) 2014-07-25 2014-07-25 Crayon d'application
EP15738653.3A EP3171986A1 (fr) 2014-07-25 2015-07-16 Crayon d'application
US15/321,658 US10350937B2 (en) 2014-07-25 2015-07-16 Applicator pen
PCT/EP2015/066355 WO2016012353A1 (fr) 2014-07-25 2015-07-16 Crayon d'application
US14/803,395 US10239342B2 (en) 2014-07-25 2015-07-20 Application pen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP14178613.7A EP2977112A1 (fr) 2014-07-25 2014-07-25 Crayon d'application

Publications (1)

Publication Number Publication Date
EP2977112A1 true EP2977112A1 (fr) 2016-01-27

Family

ID=51228326

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14178613.7A Withdrawn EP2977112A1 (fr) 2014-07-25 2014-07-25 Crayon d'application

Country Status (2)

Country Link
US (1) US10239342B2 (fr)
EP (1) EP2977112A1 (fr)

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US10442598B2 (en) * 2016-06-30 2019-10-15 James Alexander Corporation Dispenser having applicator connector member
DE102018115344A1 (de) * 2017-12-05 2019-06-06 Andreas Hiemer Vorrichtung zum Austragen eines fließfähigen Stoffes
US11654057B2 (en) 2020-04-09 2023-05-23 Bio 54, Llc Devices for bleeding reduction and methods of making and using the same
US11642324B1 (en) 2022-03-01 2023-05-09 Bio 54, Llc Topical tranexamic acid compositions and methods of use thereof

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US10239342B2 (en) 2019-03-26

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